Display apparatus

Abstract

A display apparatus includes a bottom metal layer including a power line and a data line each of which extends in a first direction, an active layer disposed over the bottom metal layer and including a semiconductor material, a gate layer disposed over the active layer and including gate electrodes each of which overlaps a portion of the active layer, a first source-drain layer disposed over the gate layer and including a scan line extending in a second direction intersecting the first direction, a second source-drain layer disposed over the first source-drain layer and including a common voltage line having a portion extending in the first direction and a portion extending in the second direction, and a pixel electrode layer disposed over the second source-drain layer and including a pixel electrode.

What is claimed is: 
     
         1 . A display apparatus, comprising:
 a bottom metal layer including a power line and a data line each of which extends in a first direction;   an active layer disposed over the bottom metal layer and including a semiconductor material;   a gate layer disposed over the active layer and including gate electrodes each of which overlaps a portion of the active layer;   a first source-drain layer disposed over the gate layer and including a scan line extending in a second direction intersecting the first direction;   a second source-drain layer disposed over the first source-drain layer and including a common voltage line having a portion extending in the first direction and a portion extending in the second direction; and   a pixel electrode layer disposed over the second source-drain layer and including a pixel electrode.   
     
     
         2 . The display apparatus of  claim 1 , wherein the portion of the common voltage line which extends in the first direction and the portion of the common voltage line which extends in the second direction are integral with each other. 
     
     
         3 . The display apparatus of  claim 1 , wherein the common voltage line has a mesh shape in a plan view. 
     
     
         4 . The display apparatus of  claim 3 , wherein
 the active layer includes a first active layer and a second active layer which are spaced apart from each other,   the gate electrodes include a first gate electrode and a second gate electrode, the first gate electrode overlapping a portion of the first active layer, and the second gate electrode extending in the first direction and overlapping a portion of the second active layer,   the first source-drain layer includes a transistor connection layer and a capacitor electrode, the transistor connection layer electrically connecting the second active layer and the first gate electrode to each other, and the capacitor electrode overlapping the first gate electrode, and   the second source-drain layer includes a pixel electrode connection layer located within the common voltage line having the mesh shape in the plan view.   
     
     
         5 . The display apparatus of  claim 4 , wherein the pixel electrode connection layer overlaps the transistor connection layer in the plan view. 
     
     
         6 . The display apparatus of  claim 4 , wherein the transistor connection layer is located within the pixel electrode connection layer in the plan view. 
     
     
         7 . The display apparatus of  claim 4 , wherein the first gate electrode is located within a set of the capacitor electrode and the pixel electrode connection layer in the plan view. 
     
     
         8 . The display apparatus of  claim 4 , wherein the pixel electrode connection layer is electrically connected to the capacitor electrode. 
     
     
         9 . The display apparatus of  claim 8 , wherein the first gate electrode is located within a set of the capacitor electrode and the pixel electrode connection layer in the plan view. 
     
     
         10 . The display apparatus of  claim 4 , wherein the pixel electrode connection layer contacts the capacitor electrode through a contact hole. 
     
     
         11 . The display apparatus of  claim 10 , wherein the first gate electrode is located within a set of the capacitor electrode and the pixel electrode connection layer in the plan view. 
     
     
         12 . The display apparatus of  claim 4 , wherein the pixel electrode contacts the pixel electrode connection layer through a contact hole. 
     
     
         13 . The display apparatus of  claim 3 , wherein the pixel electrode layer includes common electrode connection layers each of which is electrically connected to the common voltage line. 
     
     
         14 . The display apparatus of  claim 13 , wherein each of the common electrode connection layers contacts the common voltage line through a contact hole. 
     
     
         15 . The display apparatus of  claim 13 , wherein the common electrode connection layers contact a common electrode disposed over the pixel electrode. 
     
     
         16 . The display apparatus of  claim 15 , wherein the common electrode connection layers correspond to through holes defined in a pixel-defining film covering an edge of the pixel electrode. 
     
     
         17 . The display apparatus of  claim 13 , wherein, in pixels located in a first row extending in the second direction, the common electrode connection layers are located to correspond to odd-numbered pixels. 
     
     
         18 . The display apparatus of  claim 17 , wherein
 the second source-drain layer includes a pixel electrode connection layer, and   in a blue subpixel, the pixel electrode has a first end adjacent to a corresponding one of the common electrode connection layers and a second end facing away from the corresponding one of the common electrode connection layers, a contact hole through which the pixel electrode contacts the pixel electrode connection layer being located at the second end.   
     
     
         19 . The display apparatus of  claim 17 , wherein, in pixels located in a second row adjacent to the first row and extending in the second direction, the common electrode connection layers are located to correspond to even-numbered pixels. 
     
     
         20 . The display apparatus of  claim 19 , wherein
 the second source-drain layer includes a pixel electrode connection layer, and   in a blue subpixel, the pixel electrode has a first end adjacent to a corresponding one of the common electrode connection layers and a second end facing away from the corresponding one of the common electrode connection layers, a contact hole through which the pixel electrode contacts the pixel electrode connection layer being located at the second end.